semiarid regions

基本解释

About 200 species: arid and semiarid regions of the W hemisphere; two species in China.
大約200種：西半球的乾旱和半旱的地區；中國有2種。
Among all of the factors that affect trees growth and wood formation, temperature is the most important, especially in arid, semiarid regions or high latitude regions.
影響樹木生長及木材形成的諸多氣候因子中，溫度最重要，尤其是在乾旱、半乾旱地區或高緯度地區。
Extensive areas of the arid and semiarid regions have soils containing concentrations of soluble salts sufficient to adversely affect plant growth.
乾旱與半乾旱區域的廣大麪積含有對辳作物足以造成不利關系的高濃度溶性鹽。
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